This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
ScanSolve AI Answer
The correct answer is D. Step 1: Identify the process mentioned in the question. The question asks about the gas required for respiration. Respiration is the process by which organisms convert nutrients into energy. Step 2: Evaluate the given options in the context of respiration. A. Nitrogen* is abundant in the atmosphere but is not directly used by animals for respiration. B. Carbon Dioxide* is a waste product of respiration, not a gas required for it. C. Hydrogen* is not a gas required for respiration. D. Oxygen* is essential for aerobic respiration, where it is used to break down glucose and release energy. Step 3: Select the correct option. Humans and other animals require oxygen from the atmosphere for survival during respiration. The final answer is D. Oxygen. That's 2 down. 3 left today — send the next one.